1. ALBERDINGK BOLEY GmbH
2. Asahi Kasei Chemicals Corporation
3. BASF SE
4. C. L. HAUTHAWAY & SONS CORP
5. Chase Corporation
6. Covestro AG
7. Koninklijke DSM N.V.
8. Lamberti S.p.A.
9. Lanxess AG
10. Perstorp AB
11. Saudi Basic Industries Corporation
12. Solvay S.A.
13. Stahl Holdings B.V.
14. The 3M Company
15. Wanhua Chemical Group